Arcus corneae
[医] 角膜弓, 老人环
🧩 词语组成解析
[医] 弓
🗣️ 情景例句
Let's go for lunch. I'm buying.
去吃午饭吧， 我请客。
It's essential.
这是必要的。
The doctor began to operate on the boy.
医生开始给那个男孩动手术。